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公开(公告)号：US20140145626A1
公开(公告)日：2014-05-29
申请号：US13904367
申请日：2013-05-29
Applicant: Samsung Display Co., Ltd.
Inventor： Min-Soo CHOI , Kyunho Kim , Eun Chul Shin , Hwanwoong Lee , Taegon Im
IPC: H05B33/08
CPC classification number: H05B33/0815 , H05B33/0827 , Y02B20/347
Abstract: In a display device, a backlight unit including a power converter configured to generate a light source driving voltage in response to a voltage control signal, a plurality of light emitting diode strings each configured to receive the light source driving voltage through an end thereof, and a controller connected to the other end of each of the plurality of light emitting diode stringsand configured to generate a plurality of current control signals used to control a current flowing through each of the plurality of light emitting diode strings and the voltage control signal. The controller is configured to generate the voltage control signal in response to a current control signal from among the plurality of current control signals, which is applied to a light emitting diode string configured to receive a lowest forward driving voltage among the plurality of light emitting diode strings.
Abstract translation: 在显示装置中，包括被配置为响应于电压控制信号产生光源驱动电压的功率转换器的背光单元，多个发光二极管串，每个被配置为通过其端部接收光源驱动电压;以及 控制器连接到多个发光二极管串中的每一个的另一端，并被配置为产生用于控制流过多个发光二极管串中的每一个的电流和电压控制信号的多个电流控制信号。 控制器被配置为响应于来自多个电流控制信号的电流控制信号而产生电压控制信号，该电流控制信号被施加到被配置为在多个发光二极管中接收最低正向驱动电压的发光二极管串 字符串。
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公开(公告)号：US10726780B2
公开(公告)日：2020-07-28
申请号：US15945866
申请日：2018-04-05
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Chan Wook Shim , Wan Bae Park , Eun Chul Shin , Il Ho Lee , Cheol Gon Choi , Tae Yong Kim , Hyung Chul Kim
IPC: G09G3/3225
Abstract: An aging system includes panel groups each including display panels, an auxiliary board including the panel groups disposed thereon, and an aging device for supplying aging signals to the display panels through line boards to perform aging on the display panels, where the aging device supplies switch signals respectively to the display panels through the line boards, where each of the display panels includes a switch unit for supplying the aging signal to a pixel unit according to the switch signal.
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Patent Agency Ranking
公开(公告)号：US09830869B2
公开(公告)日：2017-11-28
申请号：US14524535
申请日：2014-10-27
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Tae Gon Im , Song Yi Han , Young Sup Kwon , Eun Chul Shin
CPC classification number: G09G3/3607 , G09G3/3406 , G09G2300/0809 , G09G2310/027 , G09G2320/0626 , H05B33/086
Abstract: A light unit includes a DC/DC converter. A plurality of unit light emitting diode columns receive a voltage applied from the DC/DC converter. A plurality of transistors, respectively, are connected to the plurality of unit light emitting diode columns. A current deviation compensating unit compensates for deviations between currents respectively flowing through the plurality of unit light emitting diode columns by a pulse current width modulation average current control method. A connection switch sequentially connects the current deviation compensating unit with the plurality of transistors. A resistor is connected to output terminals of the plurality of transistors. A switch controller controls connection between the connection switch and the current deviation compensating unit based on a signal applied to the resistor.
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4.发明授权Backlight unit with over-current detection and display device having the same 有权具有过流检测和显示装置的背光单元具有相同的功能公开(公告)号：US09418623B2
公开(公告)日：2016-08-16
申请号：US13928582
申请日：2013-06-27
Applicant: Samsung Display Co., Ltd.
Inventor： Taegon Im , Myoung-Soo Kim , Hwanwoong Lee , Min-Soo Choi , Eun Chul Shin , Dae-Sik Lee
CPC classification number: G09G5/10 , G09G3/3406 , H05B33/0827
Abstract: A backlight unit includes a power converter configured to generate a light source driving voltage in response to a voltage control signal, a plurality of light emitting diode strings, where each of the light emitting diode strings receives the light source driving voltage through a first terminal thereof, a plurality of transistors corresponding to the light emitting diode strings, where each of the transistors includes: a first electrode connected to a second terminal of a corresponding light emitting diode string thereof; a second electrode; and a control electrode, and a controller connected to the control electrode and the second electrode, where the controller outputs a plurality of current control signals to control electrodes of the transistors and generate the voltage control signal, where the controller generates an over-current detection signal when any one of the current control signals has a pulse width less than a predetermined reference width.
Abstract translation: 背光单元包括功率转换器，其被配置为响应于电压控制信号产生光源驱动电压，多个发光二极管串，其中每个发光二极管串通过其第一端子接收光源驱动电压 ，对应于发光二极管串的多个晶体管，其中每个晶体管包括：连接到其相应的发光二极管串的第二端子的第一电极; 第二电极; 以及控制电极，连接到控制电极和第二电极的控制器，其中控制器将多个电流控制信号输出到晶体管的控制电极并产生电压控制信号，其中控制器产生过电流检测 当任何一个电流控制信号具有小于预定参考宽度的脉冲宽度时的信号。
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公开(公告)号：US10152925B2
公开(公告)日：2018-12-11
申请号：US14850773
申请日：2015-09-10
Applicant: Samsung Display Co., Ltd.
Inventor： Taegon Im , Min-Soo Choi , Min-Gyu Kim , Youngsup Kwon , Eun Chul Shin , Dae-Sik Lee
Abstract: A backlight unit includes a light source part including a light-emitting diode array, a DC/DC converter, a driving current controller, and a reference voltage variable part. The backlight unit is operated in a first mode or a second mode. The driving current controller controls a driving current flowing through the light-emitting diode array to have a first current level during the first mode and controls the driving current flowing through the light-emitting diode array to have a second current level during the second mode. The reference voltage variable part applies a first reference voltage to the driving current controller during the first mode and applies a second reference voltage to the driving current controller during the second mode.
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公开(公告)号：US09720279B2
公开(公告)日：2017-08-01
申请号：US14698686
申请日：2015-04-28
Applicant: Samsung Display Co., Ltd.
Inventor： Seung Wan Kim , Young Sup Kwon , Jae Kyu Park , Eun Chul Shin
IPC: G02F1/1333 , G02F1/1335
CPC classification number: G02F1/133608 , G02F1/133603
Abstract: A backlight unit may include a wall and a plurality of light sources. The wall may have a side in a cross-sectional view of the backlight unit. The side may have a curved shape in the cross-sectional view of the backlight unit. The plurality light sources may include a first light source and a second light source. The second light source may be positioned farther away from a center portion of the wall than the first light source in the cross-sectional view of the backlight unit. A minimum distance between the second light source and the side may be greater than a minimum distance between the first light source and the side in the cross-sectional view of the backlight unit.
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公开(公告)号：US09288854B2
公开(公告)日：2016-03-15
申请号：US13904367
申请日：2013-05-29
Applicant: Samsung Display Co., Ltd.
Inventor： Min-Soo Choi , Kyunho Kim , Eun Chul Shin , Hwanwoong Lee , Taegon Im
CPC classification number: H05B33/0815 , H05B33/0827 , Y02B20/347
Abstract: In a display device, a backlight unit including a power converter configured to generate a light source driving voltage in response to a voltage control signal, a plurality of light emitting diode strings each configured to receive the light source driving voltage through an end thereof, and a controller connected to the other end of each of the plurality of light emitting diode strings and configured to generate a plurality of current control signals used to control a current flowing through each of the plurality of light emitting diode strings and the voltage control signal. The controller is configured to generate the voltage control signal in response to a current control signal from among the plurality of current control signals, which is applied to a light emitting diode string configured to receive a lowest forward driving voltage among the plurality of light emitting diode strings.
Abstract translation: 在显示装置中，包括被配置为响应于电压控制信号产生光源驱动电压的功率转换器的背光单元，多个发光二极管串，每个被配置为通过其端部接收光源驱动电压;以及 连接到所述多个发光二极管串中的每一个的另一端并被配置为产生用于控制流过所述多个发光二极管串中的每一个的电流和所述电压控制信号的多个电流控制信号的控制器。 控制器被配置为响应于来自多个电流控制信号的电流控制信号而产生电压控制信号，该电流控制信号被施加到被配置为在多个发光二极管中接收最低正向驱动电压的发光二极管串 字符串。
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